Spotify has 71 million subscribers. Here in the U.S., they pay around $10 per month for unlimited streaming of music. That means you can listen to any album – in your car, home or office – for a small monthly fee.

Another 88 million customers listen for free – and receive advertising commercials.

The business earned about $5 billion in revenues in 2017 – or around $70 in annual revenue per paid subscriber.